1. 24 Sep, 2012 1 commit
    • Eric Eide's avatar
      Replace license symbols with {{{ }}}-enclosed license blocks. · 6df609a9
      Eric Eide authored
      This commit is intended to makes the license status of Emulab and
      ProtoGENI source files more clear.  It replaces license symbols like
      "EMULAB-COPYRIGHT" and "GENIPUBLIC-COPYRIGHT" with {{{ }}}-delimited
      blocks that contain actual license statements.
      
      This change was driven by the fact that today, most people acquire and
      track Emulab and ProtoGENI sources via git.
      
      Before the Emulab source code was kept in git, the Flux Research Group
      at the University of Utah would roll distributions by making tar
      files.  As part of that process, the Flux Group would replace the
      license symbols in the source files with actual license statements.
      
      When the Flux Group moved to git, people outside of the group started
      to see the source files with the "unexpanded" symbols.  This meant
      that people acquired source files without actual license statements in
      them.  All the relevant files had Utah *copyright* statements in them,
      but without the expanded *license* statements, the licensing status of
      the source files was unclear.
      
      This commit is intended to clear up that confusion.
      
      Most Utah-copyrighted files in the Emulab source tree are distributed
      under the terms of the Affero GNU General Public License, version 3
      (AGPLv3).
      
      Most Utah-copyrighted files related to ProtoGENI are distributed under
      the terms of the GENI Public License, which is a BSD-like open-source
      license.
      
      Some Utah-copyrighted files in the Emulab source tree are distributed
      under the terms of the GNU Lesser General Public License, version 2.1
      (LGPL).
      6df609a9
  2. 20 Feb, 2007 1 commit
    • Pramod R Sanaga's avatar
      All the changes from the last couple of days' bug fixes: · aa642dab
      Pramod R Sanaga authored
      1) Fix max delay event to include the forward path min delay
      2) Fix time conversion problem to ulonglong in packet sensor.
      3) Fix averaging sensor to better average in case of heavy packet loss.
      4) made the buffer used to fill in junk udp packet data is a static member - takes up less memory - and allows up 65k sized udp segments to be sent.
      aa642dab
  3. 13 Feb, 2007 1 commit
  4. 06 Feb, 2007 1 commit
  5. 31 Jan, 2007 1 commit
    • Pramod R Sanaga's avatar
      1)Added 3 new sensors - Loss, Rtt and AvgThroughput. · 80d60cf6
      Pramod R Sanaga authored
      2) Modified SensorList.h, SensorList.cc and lib.h to include the new sensors.
      3) made changes in UdppacketSensor to accommodate the above new ones.
      4) Added a script makeUdpPlots.py to create gnuplot graphs from the output
      of UDP sensors.
      80d60cf6
  6. 18 Jan, 2007 1 commit
  7. 01 Dec, 2006 1 commit
  8. 03 Oct, 2006 2 commits
  9. 22 Sep, 2006 1 commit
    • Robert Ricci's avatar
      Support the TSThrougput sensor, and make it the throughput sensor · 8bacac71
      Robert Ricci authored
      used by the LeastSquaresThroughput sensor.
      
      By manual comparison to tcpdump output, the inter-packet arrival time
      seems to be computed correctly. However, it seems like it is still
      returning bandwidth numbers that are too high. This is the next thing
      to work on.
      8bacac71
  10. 14 Sep, 2006 1 commit
    • Jonathon Duerig's avatar
      Added better monitoring of replay save/load format. Changed census function to... · ee9ee12f
      Jonathon Duerig authored
      Added better monitoring of replay save/load format. Changed census function to reduce the possibility of future size errors. New monitoring is hierarchical and should be essentially free as long as the #define in saveload.cc is commented out. Added LeastSquaresThroughput to the sensorlist and the definitions in monitor.py. A couple of miscellaneous fixes.
      ee9ee12f
  11. 05 Sep, 2006 1 commit
  12. 01 Sep, 2006 1 commit
    • Jonathon Duerig's avatar
      Added initial conditions handling to monitor/stub. This should also solve the... · 1099dafc
      Jonathon Duerig authored
      Added initial conditions handling to monitor/stub. This should also solve the what does throughput mean when the connection is delay-dominated? problem. Now there are two kinds of bandwidth measurements that the magent can send back to the monitor. There is a throughput measurement which is tentative and which is applied only if it is greater than the last measurement. And there is a bandwidth measurement that is authoritative and is applied regardless.
      1099dafc
  13. 25 Aug, 2006 2 commits
  14. 24 Aug, 2006 1 commit
    • Jonathon Duerig's avatar
      Fixed the traffic model so that it is now in line with what Rob and I... · c6fa578a
      Jonathon Duerig authored
      Fixed the traffic model so that it is now in line with what Rob and I discussed. Delays are before the write with the write size cached. Writes expire based on an expiration date.
      
      Miscellaneous fixes. Open problem: PacketSensor does not deal correctly with zero-sized packets. I changed KernelTcp to pass such packets because otherwise there is no way to do state changes based on SYN/FIN/other packets. SYN is handled ok for now because of a change noted below. FIN is not.
      
      Added a StateSensor. As I discovered, using the kernel tcp_info data structure isn't useful when dealing with fields that change on a packet by packet basis because the kernel information is retrieved at processing time and not capture time. For instance, it is useless when trying to determine whether a connection was established by the time a particular packet was sent (to determine whether it is part of the three-way-handshake). The StateSensor keeps track of the state machine and correlates it to the packet involved. This allows the other sensors to rely on it to distinguish between connection setup and the rest of the connection traffic. Added references to it in the PacketSensor, the DelaySensor and the ThroughputSensor.
      
      Changed the way packet information was transmitted to the sensors to make it easier to add new packet types (as will be necessary when accept()s are handled).
      
      Fixed all outstanding flaws in the basic feedback mechanism. In short, "Its alive!". Currently the only data being transmitted is the base rtt (MinDelay). Now that the feedback is working in a basic form, it will be easier to get the other characteristics online.
      c6fa578a
  15. 09 Aug, 2006 1 commit
  16. 08 Aug, 2006 1 commit
  17. 10 Jul, 2006 1 commit
  18. 07 Jul, 2006 1 commit